package org.example;


import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;
public class MybatisUtils {
    static SqlSessionFactory sqlSessionFactory = null;

    static {
        try {
            //使用Mybatis第一步：获取SqlSessionFactory
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
//            e.printStackTrace();
            System.out.println("110");
        }
    }

    //既然有了SqlSessionFactory，顾名思义，我们需要获得SqlSession的实例
    //SqlSession 提供了在数据库执行SQL命令所需的所有方法
    public static SqlSession getSqlSession() {
        return sqlSessionFactory.openSession(true);
    }

    public static void main(String[] args) {
        System.out.println("结果："+getSqlSession());
    }
}

